1913. An account of the birds and mammals of the San Jacinto Area of southern California with remarks upon the behavior of geographic races on the margins of their habitats. Univ. California Publ. Zool., 10:197-406, pls. 6-10, 3 figs. in text. HALL, E. R. 1926. Systematic notes on the subspecies of _Bassariscus astutus_ with description of one new form from California. Univ. California Publ. Zool., 30:39-50, pls. 2 and 3. 1946. Mammals of Nevada. Univ. California Press, Berkeley, xi + 710, frontispiece, colored, 11 pls., 485 figs. in text, unnumbered silhouettes. HOOPER, E. T. 1938. Geographical variation in woodrats of the species _Neotoma fuscipes_. Univ. California Publ. Zool., 42:213-246, pls. 7-8, 2 figs. in text. JACKSON, H. H. T. 1928. A taxonomic review of the American long-tailed shrews. N. Amer. Fauna, 51:1-238, pls. 1-13, 24 figs. in text. MERRIAM, C. H. 1898. Life zones and crop zones of the United States. U. S. Dept. Agr. Bur. Biol. Surv., Bull. 10:1-79, 1 map. MUNZ, P. A., and KECK, D. D. 1949. California plant communities. Al Aliso, 2:87-105, 4 pls. OAKESHOTT, G. B. 1937. Geology and mineral deposits of the western San Gabriel Mountains, Los Angeles County. California Jour. Mines and Geol., 33:215-249, 1 pl., 7 figs. in text. PEQUEGNAT, W. E. 1951. The biota of the Santa Ana Mountains. Jour. Entomol. and Zool., 42:1-84. SANBORN, C. C. 1932. The bats of the genus _Eumops_. Jour. Mamm., 13:347-357. VAUGHAN, T. A. 1953. Unusual concentration of hoary bats. Jour. Mamm., 34:256. VON BLOEKER, J. C. 1932. Extensions of the ranges of pocket gophers in southern California. Jour. Mamm., 13:76-77. WILLETT, G. 1944. Mammals of Los Angeles County. Los Angeles County Mus. Sci. Ser., no. 9, Zool. no. 4, 26 pls. _Transmitted July 20, 1954._ [Illustration] 25-5184 UNIVERSITY OF KANSAS PUBLICATIONS, MUSEUM OF NATURAL HISTORY Institutional libraries interested in publications exchange may obtain this series by addressing the Exchange Librarian, University of Kansas Library, Lawrence, Kansas. Copies for individuals, persons working in a particular field of study, may be obtained by addressing instead the Museum of Natural History, University of Kansas, Lawrence, Kansas. There is no provision for sale or this series by the University Library which meets institutional requests, or by the Museum of Natural History which meets the requests of individuals. However, when individuals request copies from the Museum, 25 cents should be included, for each separate number that is 100 pages or more in length, for the purpose of defraying the costs of wrapping and mailing. * An asterisk designates those numbers of which the Museum's supply (not the Library's supply) is exhausted. Numbers published to date, in this series, are as follows: